Electric selective system



N 0 M 0 D E L.

J. A. GHRUNG.

ELECTRIC SELEGTIVB SYSTEM.

PPPPPPPPPPPP IL'ED FEB a 1902.

'l u 11 EL PATENTED FEB. 16, 1904.

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lllml PATENTED PEB. 16, 1904.

J. A. GEHRUNG. ELECTRIC SELECTIVE SYSTEM.

APPLICATION FILED FEB. 8, 1902. Y

2 SHEETS-SHEET 2.

H0 MODEL.

l' @dem 7",

QM? ff/hin" a //MM along the main line from' the sending-station UNITED'. STATES Patented February 16, 1904.

PATENT OFFICE.

JLIENK'AUGUSTE GHRUNG, or sr, Louis; Missouni.

ELEornic' sELEo'nvE' SYSTEM.

srEciFIcATIoN forming part of Letters Patent No. 752,150, dated February 16, 1904. A Application filed lE 'eluua1'y B, 1902. Serial No. 93.111. (No modal.)

,To LM whom, it may concern:

Be it known that I, 'JULIEN AUGUSTE GBTR- UNG, a citizen of the United States ofAmerica, and a resident of the city of St. Louis, State of Missouri, have invented certain new an'd useful Improvements in Electric Selective Systems, of which the following is a specication.

The present invention relates to that par-y ticular type of electric selective systems which forms the subject-matter of my prior Letters Patent, No. 680, 036, dated the 6th day-of Au-j;

gust, 1901, and in which-a series of mechanisms at the receiving-stations are provided with interdependent actuating-electromagnets to constitute the automatic means whereby the particular` electromotive impulse sent will only actuate the particular receiving mechanism or instrument for which itis intended; aiid the objects of the present imfy provements are to attain greater simplicity in V grammatic view illustrating the general arconstruction, combined with greater accuracy and certainty 1n the-operation kof the system, and involves a construction and arrangement of the parts composing the seriesof medianisms at the receiving station or stations in which the number .of the component parts: of

such mechanisms are greatly'reducedin num-i ber, and with which a correspondingly greater variation. than heretofore can be made bjemotive force employed to operate the's'ystem, all as will hereinafter more fully appear. In the accompanyingl drawings, illustrative of the present invention, Figure lis a diarangement of the mechanisms, circuits, and connections of the present improved electrical selective system; Fig. 2,1a perspective viewfA of a group of the selective mechanisms of the present invention. Figs. 3 and 4 are sideelevations of a modiiied form of the operatingmagnets of an individual selective mechanism.

, Fig. 5 is a fragmentary side elevation illus-A trating the individual operative connection' of-a pair of bell-crank levers with their com mon operating-lever.

Similar numerals of reference indicate like parts 1n the several views. i

In the present system the same general arrangement of parts will be employed as that shown and described'in `my former patent, No. 680,036, of August 6, 1901, and will emsending-keys 1 at the sending-station, corre-- sponding in number to the. different signals the main sending-station to a corresponding located at one or more distant receiving points 1 or stations. Each sending-key, asin my forl troduce along the main line 2 an. electrical impulse the strength or polarity of which die'rs from any of the other'electrical impulses insending-keyfs of the series. The variationsand dierences in the strength or electromotive force of the different electrical impulses present art, preferably, however, a group of resistance-coils, arrangedin series, as shown lnFigkl'.

' As. 'n my former patented construction, the;

kcorresponding. series of receiving mechanisms will also have an interdependent connectiomso along the main line from the sendingestation. AIn'the present improvement 'the circuitclosers or sending-keys `are connected up in drawings.Y The arrangement is such that vthe sending-keys l of each of said pairs are adapted of varied or diverse degrees and Aof an electropositive nature,v while the other sending-keys A 1' of said pairs are adapted to .send .electrical impulses of like varied ordiverse degrees but tures of the electrical impulses are adapted in manner hereinafter more fully' set forth to coactl with the other novel features of the present invention in the :attainment of a. simplicity ofv parts, combined with increased acf curacy and certainty of operation. To this mer' patented construction, is adapted to in` trodu'ced alongl the main line by the othel-- above referred to may be attained by any of vtheusual'm'eans or appliances knownto thef H'pairs land 1', asillustrated in Fig. 1A of the o'fa different polarity, and such different na brace ya seriesof individual circuit-closers ory L or the-likeV whichit is required to send from number of individual receivingv mechanisms that each particular mechanism will only respend and become active 'when an electricaly impulse of a predetermined ,strength is sent` to ysend along the main line electrical impulses endthe signal -receiving mechanism corresponding to the sending-keys are divided into two groups or sets, and each opposed pair of such groups has in turn operative connection with a single selective or operating electro'l ,magnet 5, the arrangement being such that with the passage of an electrical impulse of the proper strength and of one polarity throughpsuch electromagnet the armature or core of the same will bemoved in one direc-l .A tion tooperate one ofv said pair of receiving mechanisms, the companionfreceiving mstrument remaining dormant, and With the 'passage" of an electricalv impulse of the like strength lbut ef an opposite polarity through said eleotromagnet-the previously-dormant receiving mechanisml will be actively operated,

while the previously-active receiving mechanismv willbe left in a :dormant'condition 'As so arranged but one-half 'the number of selecytive electromagnets required in myformer forces of the electrical impulses sent along the` patented construction are required to'perform ya ylike range of work with the present construction, and accordingly the material featuresy of the present invention will comprise, first, a .construction and interdependence -of armature and the above-mentioned pair of re'- ceiving vmechanisms whereby with an attrae` tion of said armature by its operatingrelectro-A magnet' one of saidmechanisms'will be inde# pendently operated, and with a repulsion of said larmature the other of said pair of mechanisms willbe independently operated.

In the construction shown in Figs. 1 and 2 as y illustrative of, the presentinvention, 5 represents the series of 'selective Iand operatingelectromagnet's, the'windings of which are preferably arranged in lparallel and connected at one :en d with the main-line wire 2 and at the other end with a return wire'orlconductor 7, which may extend to groundor to a pole or terminal of the main-line battery 4 or other source of electromotive force, as may be found most desir-. able. in my former patented construction,

the electromagnets 5 will have progressivelyvaried or diverse electromotive powers or in.`

tensities and which correspond with the progressively variedl or diverse electromotive main line 2 by the series of sending-keys aforesaid. For'exam'ple, the first pair of sending- ,keys aforesaid'to the right in Fig. 1 are adapted to lsendglectrical impulses of the .maximum strength of the battery along the main line,

' will prevail when the electrical impulse pass- -ing along the main line does not -possess the requisite strength to operate the-selective and and each succeeding pair of such sending-keys to the left are adapted to send electrical impulse'sof a proportionately less strengthlalong may be employed in eifecting the operations of the present invention, and accordingly the scope of the present'inventioniis n'ot limited to any precise form or arrangement of the same, the only vital requisite being that with acurrent of one polarity the armature or core `will be attracted and with a ,current of an opposite polarity thearmature or core will be repelled. In Figs. I and 2`I show a solenoid type of electromagnet and in which the ar-` mature or core is either attracted or repelled by a stationary magnet 8, according as a positive or negative polarityl is employed to energize the electromagnet. In Fig. 4 the said armature is shown as formed by-a movable( magnet-bar 8', which is also adaptedto be atkv7g' Various types of operatlng-electromagnets tracted or repelled in accordance with the use c 'of a positive or negative polarity in the elec trical impulse. which, energizes the {electromagnet.' It is within the province of this part 8 or the magnet-bar 8' of a permanently-magnetized steel bar or by any electromagnet 8, as illustrated in Fig. 3,'in which a constant electric current is maintainedv during the op- *erationof thesystem. In such Fig. 3 the 'of the presentinvention to form the magnet electromagnets' and '8l are stationary, and' the core 6 has movement to operate the lever 18,I hereinafter described.

The receiving or lsignaling mechanisms above referred to are substantially similar in construction to that of'my former patent and will in detail comprise 'an arrangement of parts as follows: V9 is a movable yoke or head operatively connected in the manner hereinafter described tothe armature of its operat-v ing-electromagnet v5 and carrying in insulated condition 'a' contact-point 10 and a contact-iinger11,`which`ing`er is adapted under certain .conditions toI 4Contact withv the contact-point on the next adjacent movable' yoke or head to close 4the local-battery circuit to in turn operate the actuating-electromagnet 12, by which the particular signal is recorded or otherwise .employed/and which"under other conditions is adapted to prevent such closure of the local circuit upon and the consequent operation of such particular electromagnet 12.

The first-mentioned condition, just stated,

operating electromagnet of the second or last-mentioned yoke or head 9 but which possesses the requisite. strength to actuate theselective and oper tingfelectromagnet of--the rst-mentioned yokeor head 11.*.. y

The other condition, before referred to,`vvill prevail when the electrical impulse passing along the main-line has sufficient strength to actuate the operating-electromagnets ofboth .the above-mentioned yokes or heads. 'Accordingly with the sending of an electrical -imv reached which is incapable .of actuation by such predetermined strengthvof i the electrical im; pulse, and 1n consequence the local circuitwill be closed' at this point' only -to operate apredetermined local actuating-electromagnet 12, by means of which the signal is recorded or.

.. other-Wise utilized'- This operation isdue to the fact that the contact-point 10 of'such last-k mentioned selective andoperating electromag net retains its position to enable the compan-v Iion contact-fingerall of the next preceding Y selective and operating electromagnet tohave being such that with a movementof. .anyone v of said leverslin one direction an independelec-trical contact therewithto close .the d e scribed particular local circuit, and'to .the fur-v ther fact that all the other contacts are either dormant or have been'moved out ofA the Way.-

from establishing any-other circuit ,than the one above mentioned under the prevalence of the described conditions. i

In the present as in my former improve- 'ment the last selective electromagnet 5 of the series will have its contact -point 10'corre.

spending to the contact point 1i) cfi'the 13emainder of the series in the form of a station-` ary point or post, as shown. 'v

With therelease of the lsendirigg'flnlay'iused by the operator the main-line circuit will broken and :the various parts will automat ically return toa'normal position, ready'for:- ,'45

subsequent use. y In my preferred mechanical .construction of I- the receiving mechanisms, as illustrated in and individual Fig. Z'of 'the drawings, 10 v,represents a series of insulated contact-points carried by the seriesof-'verti ally-moving yokesor heads 9 y connected to theseries of local electromagnets 12 aforesaid and lthrough e the same to one pole of the local. battery 13 of thereceiving point or station. 11 represents a series of movableand insulatedv contact-fingers pivotally connected to the series ngers are connected by individual branch con-- of. vertically-xrxovng` heads' 9. -Such contactductors with the other` pole of the local battery 13 aforesaid, and their free ends are adapted under the conditions heretofore described :t0 close. the local circuit through the contactpoint A10 of the next adjacent yoke orl head 9 upon the particular actuating-electromagnet 5.

represents a series'ofn'lstationary Julcrumblocks, to which the movable contact-fingers 11 are fulcrumed at one end and which are r adapted to normally hold such contact-fingersv 11 out ofco'ntact with its companion Contact'l point lonthe next adjacent movable head or.

yoke. '15 represents a series of individual springs, tending to' normally hold the series of yokespr heads 9 inan elevated position..

16 and 17 represent a seriesofcounterpart i bell-crank levers, individual to their `particular yoke or head9 and which' in the present invention are arranged in pairs to form two independent groups to correspond with the heretofore-described twin-group arrangement ofthe other parts` of the present invention. In .the construction shown the pendent arms of? the said `bell-crank levers will have adja-` cent' and parallel relation. 18 represents a series of intermediate .operating-levers, one to each selective electromagnet 5 and to a pair of 'bellcranklevers 16 and v1-7 At one endl said levers are pivotally connected to lthelrlespectivearmatures of the electromagnets 5, while ,gagementA between the pairs of bell-cranlr'leattheir other ends the said levers have en# vers 16 and 17, as shown, the construction ent movement will be imparted to one belli crank lever, while amovement of said lever- 18 in an oppositedirection will impart an independent movement to the other bell-crank lever. By such arrangement just described an electrical impulse of a positive nature is .adapted to operate a selective or receiving mechanism of one group, while an impulse of IOO a negative nature is adapted to operate a selective or receiving mechanism of the other group.- i f Having thus fully described` my said invention, WhatIclairnas new, and desire tosecure by Letters Patent, is-- y "l Y' d. In' an electrical selective system of the arnain1 line, ajseriesosending-keys adapted t'send varied or diverse electrical impulses of diiterent polarities along themain l1ne, a secharacter herein' described, the combination of IIO ries of selected electromagnets having corre- 4 different polarities Valong' the main line, a se ries of selectiveelectromagnets having correspondinglyegraded electromotive forces, and `each comprising/an electromagnet, an arma- Of the.'

ture and a constant magnet, and twogroup's of' interdepending circuit-closets rarranged electromagnet and the companion' contact# parallel with opposing pairs operatively connected to a single selective electromagnet, substantially as set forth.

3. In an electrical selective system o'f the character herein described,'the combination of s 'character herein described, the combination a main line, a series of sending-keys adapted tosend varied or diverse electrical impulses of different polarities along the mainline, a series of selective electromagnets having correspondingly graded electromotive forces, and two groups r ofvinterdepending circuitclosers arranged parallel with opposing pairs operativelyconnected to single selective elec-z tromagnet's, onej'contact-finger of each locallas circuit closer being controlled by one selective point by thefnext adjacent selective electromagnet, substantially as set forth.

4: In an electrical selective'system of the' character herein described, 'the'combination of a main line, a series'v of sending-keys adapted to sendvaried or diverse electrical impulses o'f'dierent polarities along the mainline, a seri'e'sof selective electromagnets having correspondingly-graded electromotifve forces,

.and twowgroups of interdepending circuit- `cl )sersla`rranged in parallel with opposing pairs operatively connected to single selective electromagnets,'one contact-linger of each local-.circuitcloser being controlled4 by one selective electromagnet andthe cornps a.nioncon tact-point by the next adjacent selective electromagnet, the nal contact-point of thel se ries having a fixed position, substantially as set forth. f

5. In an electrical selective systemof the character herein described, the combination of a main line, av series of 'sendingkeys adapted to send varied or. diverse electrical impulses of diiierent Ipolaritiesl along the mainfline, a series of selective electromagnetshaving Icor-v respondingly` graded electromotive forces, and two groups of interdepending circuitclosers arranged parallel with opposing pairs 'operatively connected' to single lselective Yelecftromagnets, one contact-finger. of each lo'callcircuit closer being controlled by one selective electromagnet and fthe 'companion contactpoint by the next adjacent selective electro` magnet, the said lcontact-fingers comprising bars fulcrumed at one end tostationary brackets and pivotally connected at their middle 'with individual yokes obtaining movement from the selective electromagnets, substantially as set forth.

' 6. In an electrical selective system of the character herein described, the combination of a main line, asource of electromotive force, an electrical resistance divided into sections connected in series, 'a series of sending-keys adapted to send varied or diverse electrical impulses of different polarities along the-main line, a series of selective electromagnetshaving correspondingly-graded Aelectromotive of a main line, a source of electromotive force,

`an electrical resistance divided into sections connected in series',l`a series of sending-keys adapted to send varled or diverse lelectrical impulses of different polarities along' the main line', a series of selective electromagnets having correspondingly graded electromotive forces, and each comprising an electromagnet, an armature and a constant magnet, and' two groups of interdepending circuit-closers ar' ranged paraleli with opposing pairs operatively connected to a single selectiveelectromagnet, substantially as s et forth.

8. In an electrical selective'system of the character herein described, thecombination of a main line,.a source of electromotive force, an electrical resistance divided into sections connected in" series, a series of sending-keys adapted to send varied' or diverse electrical impulsesof different polarities along the main,

line, a series of selective electromagnets having correspondnglygraded .electromoti've forces, and two groups of interdepending cir-.

cuit-closers arranged parallel 'with opposing pairs operatively connected to single selective electromagnets, one contact.- finger of each local-circuit closer being controlled by one selective electromagnctand the companion contact-point by the next-adjacent selective electromagnet, substantially as set forth'.

9. In an electrical selective system of the 'character herein described, the combination of a mainline, a source of electromotive force, an electrical resistance divided into sections- -connected"v in series, a Aseries of sending-keys [adapted to send varied or diverse electrical impulses of different polarities along the main line, a series of selective electromagnetal having correspondingly graded electromotive forces, and two groups of interdepending circuit-closers arranged in parallel with opposing pairs operatively connected to single selective electromagnets, one contact finger of each local-circuit closerbeing controlled by one selective electromagnet and the compa`nionco nA tact-point by the next adjacent selective elecrtromagnet, the nal contact-point of the series havinga fixed position, substantially als set forth. v

10. In an electrical selective system' of the character herein described, the combination` of a main line,.a sourceof electromotive force, an electrmal resistance d1v1ded-1nto sections connected in series, a'series of sending-keys `adapted t0 send varied orI diverse electrical.

impulses of different polarities along the main line, a' series of selective electromagnets havr ing correspondingly.- graded electromotivev electromagnets, one contact'- finger of each. local-circuit closer being controlled by one selective electromagnet and the companion contact-point by the next adjacent selective electromagnet', the said contact-fingers comprising bars fulcrumed at one end to stationary IO brackets and pivotally connected at their middle with lindividuel yokes obtaining movement from the selective electromagnets, lsubstantially as set forth.

Signed'at St. Louis, Missouri, this 3d day of February; 1902. JULIEN Mieternl GHRUNG.

Witnesses:

` Enea-infn C. GHRUNG; EUGNE S. GHRUNG. 

